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c-erbB3 protein expression in ovarian cancer
T Rajkumar1, G W Stamp, C M Hughes
1ICRF Oncology Unit, Hammersmith Hospital, London W12 ONN.
Clinical Molecular Pathology
|August 1, 1996
Summary
Overexpression of the c-erbB3 growth factor receptor occurs in ovarian cancers and is linked to well-differentiated tumors. This finding suggests c-erbB3 may be a prognostic indicator and therapeutic target in ovarian cancer.
Area of Science:
- Oncology
- Molecular Biology
- Cell Signaling
Background:
- The c-erbB3 growth factor receptor plays a role in cell growth and differentiation.
- Dysregulation of growth factor receptors is implicated in various cancers, including ovarian carcinoma.
Purpose of the Study:
- To determine the prevalence of c-erbB3 growth factor receptor overexpression in ovarian carcinomas.
- To investigate the association between c-erbB3 overexpression and clinicopathological features such as histological subtype, stage, and grade.
Main Methods:
- Ninety-eight ovarian carcinoma samples were analyzed.
- Immunohistochemistry was performed using the RTJ1 monoclonal antibody against the c-erbB3 protein.
Main Results:
- 16% of ovarian tumors showed c-erbB3 protein overexpression compared to normal ovarian epithelium.
- 22% of tumors exhibited complete negativity for c-erbB3 protein.
- A statistically significant correlation was found between c-erbB3 overexpression and well-differentiated tumors.
Conclusions:
- c-erbB3 protein overexpression is present in a notable proportion of ovarian cancers.
- The overexpression of c-erbB3 is associated with tumor differentiation.
- Further research into c-erbB3 overexpression as a prognostic marker and therapeutic target in ovarian cancer is warranted.
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